They played out the goalless stalemate against the Spaniards at the Stadio Arechi in Salerno on Saturday night.
"Betis are at a more advanced stage in pre-season preparations, plus in recent years Italian sides have struggled against the Spanish clubs," said the Coach.
"I saw some positive things and others that need to be improved. There's work to do, but we are calm, as you don't earn victories overnight. We're in the middle of a process and the team must play the ball more.
"We mustn't get discouraged, as I expected us to be in this position. I understand the enthusiasm of the fans, but we don't want to fool anybody. It will take time and patience to become competitive."